Hi Raymond!

That's a good question. There's a couple ways to proceed.

1) Use Images. It's pretty easy to export images from Geogebra. Then you can insert that image in to LaTex. I haven't used Overleaf before, but this should be fairly easy. Click here for some documentation on inserting images in Overleaf.

Note: This is typically my preferred way of doing things when I'm creating a LaTex document. I create the image the way I want first and then save it and insert it into the LaTex document.

2) Use Tikz. It is possible to directly make images in LaTex using a package called Tikz. Supposedly Geogebra can be used to generate Tikz code. Click here for an article that talks about this in Overleaf a little.

Note: I've experimented a little with this in the past, but never had great luck with it (also haven't tried it in a while), but you can give it a shot if you want!